Oil-burning smelting-furnace.



0. P. MOORE.

OIL BURNING SMELTING FURNACE. APPLICATION fILED MAY 21. 1915.

1 1 53,5 1 Patented Sept. 14, 1915.

2 SHEETS-SHEET l.

mve/wtoz O. P. MOORE.

OIL BURNING SMELTING FURNACE.

APPLICATION FILED MAY 21, 1915.

4 fl V 47 2w Um v i W ,m 6 "W flflw ww- P 7/: v/// n 7. M \J v Q m m y 9% fle X NV 9 7 Z a a z W m 2 z m N i 1, 55 x J an arcs.

OLIVER P. MOORE, or SPOKANE, WASHINGTON.

OIL-BURNING SMELTING-FURNACE.

master.

- To all whom it may concern Be it known that I, OLIVER P. MOORE, a citizen of the United States, residing at Spokane, in the county of Spokane and State of WVashington, have invented a new and useful Oil-Burning smelting-Furnace;

and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,sucl1 as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an oil burning smelting furnace, and one of the objects of the invention is to provide an apparatus of. this character for pre-heating and deoxidizing the ore before entering the smelting chamber, by permitting the hot gases'to be drawn through the stack of the furnace by means of natural or mechanical draft. 1 Another object of the invention is to provide a system of fiues under the base of the smelting chamber, so that a down draft is provided for heating the bottom of the chamber, as well as the outlet for the heat gases, thereby giving full control of the heat in the preheating and reduction chamber.

Another object of the invention is that by this preheating and deoxidation of the ore, the furnace will accomplish all the necessary chemical re-actions, with a corresponding low fuel consumption, and furthermore all the heat will be utilized.

In practical fields the details of construction may necessitate alterations, falling Within the scope of what is claimed.

The invention comprises further features and combination of parts, as hereinafter set forth, shown in the drawings and claimed.

. In the drawings, Figure 1 is a vertical sectional view through the improved furnace constructed in accordance with the invention. Fig. 2 is a side elevation. Fig. 3

is a vertical sectional view at right angles to Specification of Letters Patent. I Patented Sgpt, 141, 1915 Application filed May 21, 1915. Serial No. 29,502.

to the upper portion of the stack 2, there bemg gate openings 6 to permit the ore to pass from the hopper 5 into the chamber 3. The base structure of the furnace is provided with a smelting chamber 7, there bemg a contracted passage or flue 8, which communicates between the preheating and reduction and smelting chambers. Suitable pipes 9 extend through the wall of the stack as shown clearly in Fig. 1, and deslgned to receive their supply of air from any suitable source (not shown), for conveying the air into the passage 8. It is to be observed that the lower portion of the preheating and reduction chamber is contracted, and mounted in hearings to rock or oscillate partially are hollow grate rods 10 having hollow grate bars or arms 11-. One end of each of the grate rods 10 is provided with a lever 12, whereby the rods may be oscillated or rocked, for governing the ore in its flow through the passage 8. These grate rods as shown at 13 have connected to them conduits, receiving cool air or water from any suitable source of supply, whereby the grate rods and bars may be maintained cool. A third grate rod 14 is mounted in bearings of the stack, and which is hollow, and, as shown in Fig. 1, is disposed intermediate the grate rods 10. This grate rod 14 is also provided with grate bars or arms 15, which extend at right angles to each other, so as to project toward the opposite walls 16 of the lower tapered part of the chamber 3, so as to further control the ore inits flow from the chamber 3 into the passage 8. The grate rod 14, as shown at 17 is connected to a suitable conduit, which receives cold air or water, for maintaining the rods and the bars or arms 15 cool. The air or water passes out of the grate rods 10 and 15, at

their ends opposite the ends where the air and water enters. The smelting chamber 7 is provided with a plurality of fiues 18 extending from the chamber 19 in opposite directions, then upwardly as at 20, to pass out at 21, so that a down draft from the reduction chamber throu h the passage 8 into the smelting chamber Y may pass through the fiues 18 for heating the bottom 30f the smelting chamber, and exit through the second outlet opening 22, which may be connected to the chimney stack (not shown), in any suitable manner (not shown). The base or bottom of the smelting chamber is provided with a suitable. furnace lining 23, conby means of clay plugs.

cesses 25 of the base structure are the usual oil burners 26, receiving their oil supply through the pipes 27, from any suitable source (not shown). These pipes 27 are provided with suitable valves 28 to control the oil in its flow. Connected to the burners 26 are steam or air pipes 29 having suitable valves 30 for controlling the air or steam. The burners are provided with the usual nozzles 31, which extend through the wall of the base structure, in order to project the heat into the smelting chamber, and in contact with the ore in the bottom of the chamber for smelting the same. By virtue of the air or steam pipes, the oil in the burners is mechanically mixed with the proper amount of air in order to produce the best and proper combustion. One side wall of the smelting chamber 7 has an outlet passage or tap 33, for drawing off the slag from the top of the molten metal in the chamber 7. Below the tap or opening 33 is a second opening or tap 34 for drawing off the molten metal. plugged in the usual manner (not shown) When using the furnace, the preheating and reduction chamber is filled with ore, in-

cluding a proper amount of lime and carbon. The hot gases from the smelting chamber are drawn into and through the preheating and 'reduction chamber by means of natural or mechanical draft, thereby preheating and deoxidizing the ore rior to entering the smelting chamber. he ore is held in the preheating and reduction chamber by means of the water or air cooled grate, which will allow the free passage for the hot gases. By rocking or oscillating the grate bars 10 and 14, any desired amount of ore is allowed to pass through the passage 8 into the smelting chamber, into which and upon the ore, the heat from the oil burners, one upon each side of the smelting chamber, is projected. Through ebullition or boiling in smelting, the ore is distributed over the whole surface of the smelting zone, thereby exposing the greatest possible surface of the ore to the action of the heat. Through the system of flues under the base ofthe smelting cham- These taps or openings may be ber enables a down draft, for heating the bottom of said chamber, the heat gases passing oil through the passage 22, thereby giving full control of the heat in the preheating refining chamber adjacent the top to throw flames over the surface of the bath; flues leading from the side of the refining chamber from points just below the burners and connecting with a discharge flue underneath the floor of such chamber, the relation between the flues and the openings being such as to provide a partial upwardly draft into the pre-heating chamber; and a discharge extending transversely of the furnace and under the floor of the refining chamber for removing the waste gases.

2. In a furnace, a refining chamber hav: ing at the top an opening of communication with a pre-heating chamber; burns at opposite sides of the refining chamber adjacent the top thereof to throw flames toward each other and over the surface of the bath;

a discharge chamber substantially centrally below the floor of the refining chamber and a discharge opening at one side'of the furnace; a plurality of flues leading from each side of the refining chamber from a point just below the burners and curving downwardly, inwardly and beneath the floor of the refining chamber, and toward the opposite flues, and communicating with the discharge chamber; the relation between the flues, the discharge chamber and its discharge opening and the opening of communication being such as to provide a partial upward draft into the preheating chamber, said flues constituting means to carry off the waste gases through the discharge chamber and its opening. Y

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

OLIVER P. MOORE. Witnesses: v

IRA HONEFENGER, ALBERT G. STARKEY.

chamber; burners at opposite sides of the .extending transversely thereof, and having 

